Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Rare Earth Infrared Quantum Counter

Not Accessible

Your library or personal account may give you access

Abstract

An analysis of an ideal five-level ir quantum counter (IRQC) is presented. The importance of the two additional levels is discussed and analyzed. The parameters for achieving optimum performance as an ir detector and/or an image converter are presented. In theory, the IRQC is the only quantum amplifier with photon gain that can approach a noise temperature of absolute zero. In practice, with the constriction of available materials and technology, the most feasible use for the IRQC in the near term would be in an active system. An ir laser would be used to scan the target while another laser would pump the excited state transition. The IRQC action has been observed in this laboratory in the tripositive rare earths of Pr, Nd, Eu, Tb, Dy, Er, and Tm. These ions were incorporated in single crystal lattices of CaF2, BaF2, SrF2, CdF2, LaF3, CaWO4, Al2O3, YAG, LaCl3, and in solutions of the various trichlorides (dissolved in D2O). A total of 165 schemes are reported. The rare earth impurity concentration varied from 0.05% to 20%. In our laboratory, the primary range of interest for detection and/or image conversion is between 1 μ and 2 μ. Therefore, almost all the systems studied involved the detection of an ir photon in this region.

© 1968 Optical Society of America

Full Article  |  PDF Article
More Like This
Infrared detection scheme with the photon avalanche effect

Delena Bell Gatch, William M. Dennis, and William M. Yen
Appl. Opt. 42(4) 615-620 (2003)

Progress in rare-earth-doped mid-infrared fiber lasers

Angela B Seddon, Zhuoqi Tang, David Furniss, Slawomir Sujecki, and Trevor M Benson
Opt. Express 18(25) 26704-26719 (2010)

Fluorescence Quantum Efficiency of Rare-Earth Chelates*

M. L. Bhaumik and C. L. Telk
J. Opt. Soc. Am. 54(10) 1211-1214 (1964)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (19)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (37)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved